22221102112 has 72 divisors (see below), whose sum is σ = 48563376876. Its totient is φ = 10000320000.

The previous prime is 22221102077. The next prime is 22221102133. The reversal of 22221102112 is 21120112222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21070264336 + 1150837776 = 145156^2 + 33924^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362662 + ... + 419482.

Almost surely, 2^22221102112 is an apocalyptic number.

22221102112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221102112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24281688438).

22221102112 is an abundant number, since it is smaller than the sum of its proper divisors (26342274764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221102112 is a wasteful number, since it uses less digits than its factorization.

22221102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56954 (or 56935 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221102112 its reverse (21120112222), we get a palindrome (43341214334).

It can be divided in two parts, 2222110 and 2112, that added together give a palindrome (2224222).

The spelling of 22221102112 in words is "twenty-two billion, two hundred twenty-one million, one hundred two thousand, one hundred twelve".